Attachment for grates



Patented Feb. 5, 1924.

UNITED STATES NICHOLAS J. ZUZ ULIN, 0F MINOT, NORTH DAKOTA.

ATTACHMENT FOR GRA'IES.

Application filed July 11, 1923. Serial No. 650,767.

T 0 aZZ 117 710771 it may concern.

Be it known that I, NICHOLAS J ZUZULIN, a citizen of the United States,residing at Minot, in the county of Ward and State of North Dakota, haveinvented certain new and useful Improvements in Attachments for Grates,of which the following is a specification.

My invention relates to attachments for grates of stoves, furnaces orthe like.

An import-ant object of the invention is to provide a. device of theabove mentioned character, which will permit of the free circulation ofair among the fuel in the fuel box, and thereby assure completecombustion.

Another object of the invention is the provision of a device of thischaracter which 1s used in conjunction with a grate but is not in anyway attached thereto, and which is therefore capable of being applied toany grate without any change in the construction of the grate.

A further object of the invention is to provide a device of thischaracter which, when the grate is shaken will thoroughly agitate thefuel and permit air to pass 1n among said fuel.

Another object of the invention is to provide adevice in which the domeor cap members can be readily interchanged,removed or replaced withoutthe use of tools or mechanical skill.

Another object is the provision of a de- Vice of the character which issimple of construction, easy and cheap to manufacture, and which isstrong and durable.

Other objects and advantages of the invention will be apparent duringthe course of the following description.

In the accompanying drawings forming a part of this specification, andin which like numerals are employed to designate like parts throughoutthe same,

Figure 1 is a plan view of the device embodying my invention,

Figure 2 is a side elevation of the device applied to agrate, and,

Figure 3 is a transverse section taken on line 3-3 of Figure 2.

In the drawings, wherein for the purpose of illustration is shown apreferred embodiment of my invention, the numeral 10 designates thegrate sections of a stove or furnace and are of the usual constructionand form no part of my invention. In the formshown in the drawings, thegrate is shown as comprising twoseparate grate sections which arerotatably mounted so as to partake of a rocking motion. Other types of.grate might be used if desired.

Transverse supporting rockers 11 rest upon the grate sections and carrya longitudinal base member 12 which is arranged substantially centrallyof the rockers and of the grate sections. This base member 12 extendsthroughout the entire length of the grate and carries a plurality ofupright frames, transversely arranged. These upright frames 13 arepreferably cut from the same piece of metal as the longitudinal basemember12,and twisted at right angles thereto. The upright frames 13 areformed with largeopenings 14 for the circulation of air and carry spacedupstanding prongs or arms 15 which are arranged vertically.

Hollow shells 16 have openings 17 to receive the upstanding arms 15, andthese shells are adapted to fit over the upright frames18 and to besupported by said frames above and spaced from the grate sections 10.Each of these shells is hollow and is perforated as. at 18 to allow freecirculation of air, and is provided with a mushroom shaped dome 19,which is also 1 perforated and which extends laterally be yond theshells, as at 20. The domes are also hollow, and consequently there aretwo chambers, one formed by the hollow shell and one by the hollow dome.The chamber formed by the dome 19 fits between the upstanding arms 15and rests upon the upright frame 13, thereby steadying the shell andpreventing downward movement.

These domes can be formed of any suitable material such as iire clay,cement, cast iron or the like.

In operation, the device is placed on a grate and the fuel is put intothe fire box as usual. This fuel will settle down around the shell anddome and air will be allowed to circulate freely through the perforatedshell and through the fuel about the shell. The dome 19 extends out intothe fuel and causes freer circulation. When the grate is shaken, therockers 11 will be caused to partake of a rocking movement, due to theirshape, and the shells will thoroughly agitate the fuel and allow air tocirculate.

Any number of these shells may be provided, depending upon the number ofupright frames carried by the base. The shells are freelyinterchangeable and can be readily removed and replaced, by merelylifting them from the arms 15. The entire device. is bodily removableand as it is not in any way attached to the grate, no tools or skill isneeded to so remove it, and it can be placed in any stove or furnace inthe same manner as no changes need be made to the grate. With thisimproved device, lignite and soft coal can be used with good results asperfect combustion is caused by the free circulation of air.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as a preferred example of the same, and thatvarious changes in the shape, size, and arrangement of parts may beresorted to without departing from the spirit of my invention, or thescope of the subjoined claims.

Having thus described my invention, I claim:

1. An attachment for grates comprising, a supporting base, an aircirculating shell carried by said base, and rockers carried by the base,said rockers being adapted to rest upon the grate sections whereby whenthe grate is shaken, a rocking motion will be imparted to the shell,through the rockers.

2. An attachment for grates comprising, a longitudinal base, upstandingarms carried by said base, perforated shells detachably mounted on saidarms, and rockers carried by the base whereby when the grate is shaken arocking motion will be imparted to the shells by reason of the rockers,and a more perfect combustion of the fuel will be accomplished.

3. An attachment for grates comprising, a relatively long base adaptedto extend for the major portion of the length of the grate, upstandingtransverse members carried by the base and projecting above the same andspaced longitudinally of the base, each member carrying a pairofupstanding spaced fingers, and. perforated shells carried by themembers. each shell having a pair of openinns for dctachably receivingthe correspending pair of fingers.

4. In an attachment for grates, a supporting base resting on the grate,a transverse member carried by the base and having upstanding arms, aperforated shell detachably mounted on said arms, and a mushroom shapeddome formed on-the shell and extending laterally therebeyond.

5. An attachment for grates comprising a longitudinal base, uprightsupport members carried by the base, spaced upstanding arms carried bythe support members, perforated shells having openings to receive theupstanding arms, mushroom shaped domes formed on the shells, said domesbeing perforated and hollow, whereby two chambers are formed, one by theshell and one by the hollow dome, the walls of the chamber formed by thehollow dome fitting between the upstanding arms and securing the shellagainst undue movement, and the lower wall of said chamber restingagainst the support member and serving to prevent downward movement. 7

6. An attachment for grates comprising, a longitudinal base, spacedupstanding arms carried by the base,-perforated shells having openingsto receive the spaced arms, a dome formed on the shell and extendinglaterally therebeyond, and transverse rockers carried by the base toimpart a rocking motion to the shells when the grate is shaken.

7. An attachment for grates comprising a longitudinal base, uprightsupporting members carried by said base and arranged at right anglesthereto, spaced upstanding arms carried by said upright support,perforated shells having openings to receive the upstanding arms, saidshells being removably supported by said arms above and spaced from thebase, domes carried by the shells andextending laterally therebeyond,said domes being hollow and perforated, and transverse rockers carriedby the base and adapted to rest on the grate, sections, whereby when thegrate is shaken, a rocking motion will be imparted to the shells so asto agitate the fuel in the firebox.

in testimony whereof I affix my signature.

NICHOLAS Z'LUZULH

